I'm always encouraging people to keep up to date with books online. There's another update out now.
I know when you get to this link:
http://www.microsoft.com/downloads/details.aspx?FamilyID=be6a2c5d-00df-4220-b133-29c1e0b6585f&DisplayLang=en
it says "September" but it really is the one issued in December. (Of course when it's installed, it says November :-))